摘要:
Process for the preparation of nucleophilically ring-substituted aromatic compounds from an aromatic-thallium (III) metallate is provided in which the aromatic-thallium (III) metallate is contacted with a source of the nucleophile to form the desired substituted aromatic compound, which may be recovered from the reaction mixture as by distillation. Exemplary processes include the preparation of aniline and phenol from benzene.
摘要:
A method of preparing 2,6-di-tert.butylphenol comprises alkylation of phenol with isobutylene at a temperature within the range of from 100.degree. to 110.degree. C in the presence, as a catalyst, of phenyloxyorthotertbutylphenoxyhydroaluminum acid of the formula:[(OC.sub.6 H.sub.5).sub.n (ortho-tert.C.sub.4 H.sub.9 C.sub.6 H.sub.4 O).sub.m Al]Hwhereinn = 1 to 3;m = 1 to 3;n + m = 4.The method of the present invention makes it possible to increase the product yield to 80% by weight and to conduct the process under atmospheric pressure.
摘要:
A phenol is produced by heating water and a cyclic or acyclic alkane or alkene of 6-10 carbon atoms at a temperature of 350.degree. to 700.degree. C in the presence of a metal oxide catalyst. Exemplary is the heating of water and cyclohexane in a nitrogen atmosphere and in the presence of ZnO/TiO.sub.2 to produce phenol.
摘要翻译:在金属氧化物催化剂的存在下,在350〜700℃的温度下加热水和6-10个碳原子的环状或无环烷烃或烯烃制备苯酚。 示例性的是在氮气气氛中和在ZnO / TiO 2存在下加热水和环己烷以产生苯酚。
摘要:
In the process of producing phenol from cumene, aqueous waste streams result which are contaminated with organic materials, particularly phenol, which are made innocuous to the environment only with substantial difficulty. A process is described to reduce the biological oxygen demand of these aqueous wastes, particularly the phenol content, by a liquid extraction step whereby a highly aromatic fraction of an organic waste stream in the phenol process is used as the solvent. The process includes provision for simultaneous preparation and recovery of the solvent as well as recovery of the phenol.
摘要:
Aromatic compounds of formula ##SPC1##In which R and R.sup.1 are independently hydrogen or C.sub.1 - C.sub.4 alkyl are hydroxylated with hydrogen peroxide and a phosphorus compounds, which is a phosphoric acid, ester thereof, halogenophosphoric acid, ester thereof, phosphorus pentoxide, phosphorus halide or oxyhalide, in the absence of acid of pK
WHERE R1, R2 and R3 independently represent hydrogen or C1-C5 alkyl is obtained by oxidising with hydrogen peroxide a solution of the corresponding aldehyde in a polymethylene sulphone e.g. sulpholane.
摘要:
THERE IS PROVIDED A PROCESS FOR SELECTIVELY ALKYLATING A PHENOLIC COMPOUND IN THE ORTHO-POSITION TO THE SIGNIFICANT REDUCTION OF ALKYLATION IN THE META- AND PARA-POSITIONS WHICH COMPRISES ALKYLATING THE PHENOLIC COMPOUND WITH AN ALKANOL IN THE PRESENCE OF A TELLURIUM-CONTAINING CATALYST.
摘要:
THIS DISCLOSURE TEACHES THAT A NEW CLASS OF COMPOUNDS THE 4-PHENYLBICYCLO(2.2.2)OCTANE AND OCT-2-ENE - 1-CARBINOLS AND CARBOXALDEHYDES ARE PHARMACEUTICALLY USEFUL AS ANTIFERTILITY AGENTS. COMPOUNDS WITHIN THE SCOPE OF THIS INVENTION CAN BE FORMULATED INTO INJECTIBLE, ORAL OR RECTAL DOSAGE FORMS AND WHEN ADMINISTERED BY THE APPROPRIATE ROUTE ARE SURPRISINGLY EFFECTIVE TO PREVENT PREGNANCY IN ANIMALS.
摘要:
The invention relates to a process for the preparation of a low-base number calcium sulfonate that is essentially chloride free. The process involves preparing a sulfonic acid solution by adding a solvent to sulfonic acid, removing dissolved or entrained SO2 or SO3, mixing the solution with a specific amount of water and calcium hydroxide, heating the mixture, separating out excess calcium hydroxide and calcium salts from the mixture, and recovering solvent and oil to capture the calcium sulfonate product.
摘要:
The present invention relates to a method of cleaving arylethers such as arylethers represented by the formula: ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.6 alkyl, cycloalkyl, phenyl, substituted phenyl or CH.dbd.CH.sub.2 ; each A is independently NO.sub.2, hydroxy, halo, or methoxy; n is an integer from 0 to 5; and x is 1 or 2, comprising contacting the arylether with an amide hydrohalide salt under conditions sufficient to cleave the ether group(s) of the arylether and form a phenol or substituted phenol. The present invention also relates to a method of preparing 4,6-diaminoresorcinol, which is a monomer used for making polybenzoxazoles (PBO).